﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;

namespace WpfStudy
{
    /// <summary>
    /// StyleWindow.xaml 的交互逻辑
    /// </summary>
    public partial class StyleWindow : Window
    {
        public string? Test;
        public StyleWindow()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            Test = TextBlock1.Text;
            this.TextBlock1.Text = "My_Button_Click!";

        }

        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            Test = TextBlock1.Text;
            this.TextBlock1.Text = "HelloWorld!";
        }

        private void Button_Click_2(object sender, RoutedEventArgs e)
        {
            if (Test != null)
            {
                TextBlock1.Text = Test;
            }
        }
    }
}
